package org.apache.maven.plugin.version;

/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

import java.util.Collections;
import java.util.List;

import org.apache.maven.execution.MavenSession;
import org.apache.maven.model.Model;
import org.apache.maven.model.Plugin;
import org.apache.maven.project.MavenProject;
import org.eclipse.aether.RepositorySystemSession;
import org.eclipse.aether.repository.RemoteRepository;

/**
 * Collects settings required to resolve the version for a plugin.
 * 
 * @since 3.0
 * @author Benjamin Bentmann
 */
public class DefaultPluginVersionRequest implements PluginVersionRequest {

  private String groupId;

  private String artifactId;

  private Model pom;

  private List<RemoteRepository> repositories = Collections.emptyList();

  private RepositorySystemSession session;

  /**
   * Creates an empty request.
   */
  public DefaultPluginVersionRequest() {
  }

  /**
   * Creates a request for the specified plugin by copying settings from the specified build
   * session. If the session has a current project, its plugin repositories will be used as well.
   * 
   * @param plugin The plugin for which to resolve a version, must not be {@code null}.
   * @param session The Maven session to use, must not be {@code null}.
   */
  public DefaultPluginVersionRequest(Plugin plugin, MavenSession session) {
    setGroupId(plugin.getGroupId());
    setArtifactId(plugin.getArtifactId());

    setRepositorySession(session.getRepositorySession());

    MavenProject project = session.getCurrentProject();
    if (project != null) {
      setRepositories(project.getRemotePluginRepositories());
    }
  }

  /**
   * Creates a request for the specified plugin using the given repository session and plugin
   * repositories.
   * 
   * @param plugin The plugin for which to resolve a version, must not be {@code null}.
   * @param session The repository session to use, must not be {@code null}.
   * @param repositories The plugin repositories to query, may be {@code null}.
   */
  public DefaultPluginVersionRequest(Plugin plugin, RepositorySystemSession session, List<RemoteRepository> repositories) {
    setGroupId(plugin.getGroupId());
    setArtifactId(plugin.getArtifactId());

    setRepositorySession(session);

    setRepositories(repositories);
  }

  public String getGroupId() {
    return groupId;
  }

  public DefaultPluginVersionRequest setGroupId(String groupId) {
    this.groupId = groupId;

    return this;
  }

  public String getArtifactId() {
    return artifactId;
  }

  public DefaultPluginVersionRequest setArtifactId(String artifactId) {
    this.artifactId = artifactId;

    return this;
  }

  public Model getPom() {
    return pom;
  }

  public DefaultPluginVersionRequest setPom(Model pom) {
    this.pom = pom;

    return this;
  }

  public List<RemoteRepository> getRepositories() {
    return repositories;
  }

  public DefaultPluginVersionRequest setRepositories(List<RemoteRepository> repositories) {
    if (repositories != null) {
      this.repositories = repositories;
    } else {
      this.repositories = Collections.emptyList();
    }

    return this;
  }

  public RepositorySystemSession getRepositorySession() {
    return session;
  }

  public DefaultPluginVersionRequest setRepositorySession(RepositorySystemSession session) {
    this.session = session;

    return this;
  }

}
